"It's excessive iron on the brain and there's around 50 people worldwide who have it," MichaelAnn's mother Sherry Byrne said to ABC 27. "It'll progress where she gets Parkinson's characteristics and Alzheimer's characteristics."

Going into her senior year in high school, MichaelAnn only wanted one thing in the entire world.

The students nominated MichaelAnn for homecoming queen.

"We wanted to help make her wish come true," Melanie McCormick, a student on the homecoming court said to PennLive. "So when the kids were asking around, about who we should nominate, we said, "Let's vote for MichaelAnn.' We thought it would be awesome to put her on the court."

Sherry Byrne finally received the phone call from the school informing her that her daughter was voted homecoming queen.

MichaelAnne was escorted by her father onto the football field during the homecoming ceremony.

"We were all standing on the field. It was the moment we were all waiting for," McCormick said to PennLive. "I was so happy that she got homecoming queen. One of the other girls on the court was crying, she was so happy for MichaelAnn."

After the homecoming ceremony, MichaelAnn's mom wrote on Facebook that her daughter was still up at one in the morning giggling and that she was "surprised at how much making homecoming queen has meant to her."

"It's nothing you would ever expect when you're the father of a child with this type of disability; that this kind of thing would ever happen," her father, Greg Byrne, said to ABC 27. "To see people accept her and welcome her into the community is more than we could ever hope for."